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Add Global Working Days

Adds or subtracts weekday-baseline working days for any supported CLDR alpha-2 territory code using CLDR weekend rules, without inventing public-holiday defaults.

Start dateGregorian start date from 1900-01-01 through 2100-12-31. TerritoryCLDR territory code in alpha-2 form. The complete accepted-code enum is exposed here; it includes ISO-style territory codes plus CLDR regional and legacy codes where present. Working daysSigned weekday-baseline offset; non-zero offsets exclude the start date.

When to use

You need a weekday-based date offset for a territory and explicitly want public holidays excluded from the calculation.

Do not use when: A public-holiday, employer, bank, exchange, school, religious or emergency-closure calendar is required.

Example user requests

Add 5 weekday working days to 2026-10-02 in AU.
Subtract 3 Saudi weekday-baseline working days from 2026-06-15.

Formula

move one Gregorian day at a time and decrement remaining only when globalWorkingDayStatus(date, territory).is_working_day is true

The start date is excluded for non-zero offsets. Weekend dates are skipped; public holidays are not inferred or skipped.

Inputs

Parameter	Type	Unit	Required	Description
`start_date`	date		yes	Gregorian start date from 1900-01-01 through 2100-12-31.
`territory`	enum: AC \| AD \| AE \| AF \| AG \| AI \| AL \| AM \| AN \| AO \| AQ \| AR \| AS \| AT \| AU \| AW \| AX \| AZ \| BA \| BB \| BD \| BE \| BF \| BG \| BH \| BI \| BJ \| BL \| BM \| BN \| BO \| BQ \| BR \| BS \| BT \| BU \| BV \| BW \| BY \| BZ \| CA \| CC \| CD \| CF \| CG \| CH \| CI \| CK \| CL \| CM \| CN \| CO \| CP \| CQ \| CR \| CS \| CU \| CV \| CW \| CX \| CY \| CZ \| DD \| DE \| DG \| DJ \| DK \| DM \| DO \| DZ \| EA \| EC \| EE \| EG \| EH \| ER \| ES \| ET \| EU \| EZ \| FI \| FJ \| FK \| FM \| FO \| FR \| FX \| GA \| GB \| GD \| GE \| GF \| GG \| GH \| GI \| GL \| GM \| GN \| GP \| GQ \| GR \| GS \| GT \| GU \| GW \| GY \| HK \| HM \| HN \| HR \| HT \| HU \| ID \| IE \| IL \| IM \| IN \| IO \| IQ \| IR \| IS \| IT \| JE \| JM \| JO \| JP \| KE \| KG \| KH \| KI \| KM \| KN \| KP \| KR \| KW \| KY \| KZ \| LA \| LB \| LC \| LI \| LK \| LR \| LS \| LT \| LU \| LV \| LY \| MA \| MC \| MD \| ME \| MF \| MG \| MH \| MK \| ML \| MM \| MN \| MO \| MP \| MQ \| MR \| MS \| MT \| MU \| MV \| MW \| MX \| MY \| MZ \| NA \| NC \| NE \| NF \| NG \| NI \| NL \| NO \| NP \| NR \| NT \| NU \| NZ \| OM \| PA \| PE \| PF \| PG \| PH \| PK \| PL \| PM \| PN \| PR \| PS \| PT \| PW \| PY \| QA \| QO \| QU \| RE \| RO \| RS \| RU \| RW \| SA \| SB \| SC \| SD \| SE \| SG \| SH \| SI \| SJ \| SK \| SL \| SM \| SN \| SO \| SR \| SS \| ST \| SU \| SV \| SX \| SY \| SZ \| TA \| TC \| TD \| TF \| TG \| TH \| TJ \| TK \| TL \| TM \| TN \| TO \| TP \| TR \| TT \| TV \| TW \| TZ \| UA \| UG \| UM \| UN \| US \| UY \| UZ \| VA \| VC \| VE \| VG \| VI \| VN \| VU \| WF \| WS \| XK \| YD \| YE \| YT \| YU \| ZA \| ZM \| ZR \| ZW		yes	CLDR territory code in alpha-2 form. The complete accepted-code enum is exposed here; it includes ISO-style territory codes plus CLDR regional and legacy codes where present.
`working_days`	integer	working days	yes	Signed weekday-baseline offset; non-zero offsets exclude the start date. Range: ≥ -10000, ≤ 10000

Outputs

Output	Type	Unit	Description
`start_date`	date		Input date.
`result_date`	date		Date reached after the weekday-baseline offset.
`working_days_added`	integer	working days	Signed offset.
`calendar_days_elapsed`	integer	days	Signed Gregorian difference.
`territory`	string		Normalized uppercase CLDR territory code.
`territory_display_name`	string		Calcgrid display name; TW is displayed as 中国台湾省 while the machine code remains TW.
`weekend_days`	string_list		Territory weekend convention from CLDR.
`calendar_scope`	string		weekday_pattern_only; public holidays are intentionally not included.
`holiday_policy`	string		public_holidays_not_included for this global baseline.
`calendar_profile`	string		Machine-readable profile id: global-weekday-baseline.
`calendar_selection_catalog_url`	string		Use this catalog before selecting a jurisdiction-specific holiday package.
`dataset_version`	string		Pinned CLDR weekend-data version.
`source_url`	string		Pinned CLDR JSON source.

Example

Five Australian weekday-baseline days: {"start_date":"2026-10-02","territory":"AU","working_days":5} → {"result_date":"2026-10-09"}

GET https://tttkmbb.com/api/v1/calculate/global-add-working-days?start_date=2026-10-02&territory=AU&working_days=5

Machine access

API: GET https://tttkmbb.com/api/v1/calculate/global-add-working-days (query parameters) or POST with a JSON body {"inputs": {...}}
Schema: https://tttkmbb.com/api/v1/calculators/global-add-working-days · Markdown: https://tttkmbb.com/everyday/global-add-working-days.md · JSON definition: https://tttkmbb.com/everyday/global-add-working-days.json
MCP: server https://tttkmbb.com/mcp, tool add_global_working_days
OpenAPI operationId: add_global_working_days
Freshness: static. Authentication: none. Rate limit: fair use (see rate limits).

Sources

Unicode CLDR 48.2 supplemental weekData.json (standards)

FAQ

Does the start date count?

No for non-zero offsets; zero returns the start date unchanged.

Are public holidays skipped?

This is a global weekday baseline, not a public-holiday, bank-settlement, exchange, school, employer, religious or emergency-closure calendar. Use a jurisdiction-specific evidence package when holiday exclusions matter.

Related calculators

Global Working Day Baseline — Inspect one territory date and its weekend evidence.
Global Working Days Between Dates — Count weekday-baseline working days in a range.